See TGray5's post.
There are tens of thousands of BMW out there running Burger's tune.
I trust Terry's work as it has been proven to be excellent.

As for my subjective assessment of improved driving feel, isn't that what is most important?
Numbers and charts are meaningless to me because I am not shooting to have the most powerful 535.
Like I said in my review, base on the throttle response and tip in fix alone the tune is well worth the money.
It just made the car so much more useable in everyday situation, highway or in traffic.
Everything else is just icing on the cake.

I don't mean to be confrontational but you come off as extremely naive. What do this company's products on other BMW models have to do with how your car is impacted by this tune? What do you think Terry's engineering and test investment looks like for the f10 that would give you this confidence? There is not a large sample of f10 users you can rely on that have provided solid data, and the only data I have seen has indicated there is a potential problem. If you don't have data you have no way to know what is going on inside your engine.

And I'm not talking about max power, I'm talking about having confidence that the tune you installed is SAFELY adding more power. Driving feel is only important if you can be sure you're not causing damage to your car. Without verifying myself that everything is copacetic I would not be running this tune, but maybe that's just me.